Sheet-metal can.



F. TYsoN.

SHEETZMETAL GAN. (Applicatio man pw. 19, 1902.)

(No Model.;

v the iiange of the can-head, and Fig.` 4 is an UNITED STATES ATENTFries.

FRANK TYSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOGEORGE II. OOLKET, OF PHILADELPHIA, PENNSYLVANIA.

SHEET-METAL CAN.

SPECIFICATION forming part of Letters Patent No. 709,426, datedSeptember 16, 1902.

Application filed March 19, 1902. Serial No. 99,006. (No model.)

To fL//Z 1x1/1.0m t :may concern:

` Be it known that I, FRANK TYSQN, a citizen of the United States,residing in Philadelphia, Pennsylvania,have invented certainImprovements in Sheet-Metal Cans, of Which the following is aspecification.

One object of my invention is to provide a seam for the body of the canwhich will not form an excrescence upon or a groove in the exterior ofthe same, and hence Will not interfere with the practical continuity ofsaid exterior snrface,a further object being to provide the can withmeans for holding the meeting portions of the body-strip in properposition du ring the soldering operation, which means will be covered bythe'flanges of the heads when the can is completed.

In the accompanying drawings, Figure lis a perspective viewof asheet-metal can constructed in accordance `with my invention, but withone of the heads removed therefrom. Fig. 2 is an enlarged transversesection of the seamed portion of the body of the can.` Fig. 3 is anenlarged transverse section of that portion of the seamcd body Whichisbeneath l i of the heads of the can, this head having a flange 3, whichoverlaps one end of the cylindricalbody, as shown in Figs. l and 4. Themeeting portions of the strip l, which constitute the body of the can,are united by y a ilushjoint lap-seam, formed by depressing one edgeofthe strip to the extent of the thickness of the metal composing saidstrip,

so as to form a shelf or seat 4 for the reception of the other end` ofthe strip, whose edge abuts against theshonlder, formed by depressingthe strip, as clearly shown in Fig. 2.

`At each end ofthe can the shelf 4 has formed in it a slot 6, and theoverlapping portion of the strip has formed in it angular incisions `forproducinga triangular spur or tongue 7, "which can be passed through theslot 6 in the shelf 4 and then bent under said shelf, so as to firmlyretain the edge of the strip in its proper relation to the shoulder'during the operation of soldering together the ends of the strip to formthe cylindrical body of the can, the solder not only uniting theoverlapping end of the strip to the shelf 4, but also uniting the edgeof said overlapping portion of the strip to the shoulder '5, as shown inFig. 2. By this means a firm unionof the overlapping ends of the stripconstituting the can-body is effected, and the external surface of saidcan-body presents a smooth and continuous surface at the searn-that isto say, a surface which does not present either a projection or a grooveindicating the presence of the seam.

The slots 6 and engaging tongues 7 are formed so closely to the ends ofthe can-body Vthat when the heads of the can are applied to said bodythe flanges of said heads will overlap the openings formed by thebending in of the locking-lingers 7, and thereby presaid locking devicesfrom detracting from the neat external appearance of the can;

If desired, the tongue 7 may be simply passed through the slot 6 Withoutbeing subsequently bent down in the inner side of the shelf 4; but suchbending insures a more secure confinement of the overlapping portions4.of the can-body and is therefore preferred.

FRANK TYsoN.

Witnesses:

F. F.. BECHTOLD, Jos. I-I. KLEIN.

`vent leakage at those points and also prevent

